Latitude: 33°59'13"N
Longitude: 112°33'5"W
‡Ref.: Jahns, Richard H. (1952), Pegmatite Deposits of the White Picacho District, Maricopa and Yavapai Counties, Arizona, Arizona Bureau of Mines Bull. 162: 97-98.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
USGS Red Picacho Quadrangle map.
MRDS database Dep. ID #10027572, MRDS ID #M003393; and Dep. ID #10137374, MAS ID #0040250751.
A former surface Feldspar pegmatite mine located in the SE ¼ of te SE ¼ sec. 34, T.8N., R.3W.
Mineralization is a pegmatite body that appears to be a large, irregular lens, the south margin of which is concealed on the slope below the main cut. It is elongate in an east-southeasterly direction, and may have a general dip to the SW. Northwest of the cut, the pegmatite body splits into two North- to NE-trending prongs, which are separated by about 25 feet on thinly foliated quartz-mica schist. The country rock septum appears to taper downward.
A thin zone of quartz-albite-schorl-perthite pegmatite forms the border of the lens, and grades inward into a coarse-grained, perthite-rich wall zone. The intermediate zone, by far the largest unit in the pegmatite body, consists of coarse- to very coarse-grained, blocky perthite, with subordinate quartz that occurs both interstitially and as scattered irregular masses that are 2 inches (5 cm to 13 inches (32.5 cm) in maximum dimension. The core comprises numeous irregular segments of very coarse-grained anhedral quartz, the largest of which has an exposed length of 11 feet. In many places the pegmatite is transected by numerous tiny, irregular veinlets of sugary quartz, and by even thinner veinlets of fine-grained, waxy, yellowish-green muscovite. Some prisms and stubby, rounded crystals of schorl are concentrated along fractures and others are scattered irregularly through the rock.
Workings include a bench-like cut about 100 feet long, 30 feet wide and 15 feet high at the face.
Mineral List
7 entries listed. 4 valid minerals.
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